diff --git a/vendor/github.com/skydive-project/goloxi/decoder.go b/vendor/github.com/skydive-project/goloxi/decoder.go
new file mode 100644
index 0000000..aa974b9
--- /dev/null
+++ b/vendor/github.com/skydive-project/goloxi/decoder.go
@@ -0,0 +1,94 @@
+package goloxi
+
+import (
+	"encoding/binary"
+)
+
+type Decoder struct {
+	buffer     []byte
+	offset     int
+	baseOffset int
+}
+
+func NewDecoder(data []byte) *Decoder {
+	return &Decoder{
+		buffer: data,
+	}
+}
+
+func (d *Decoder) ReadByte() byte {
+	c := d.buffer[d.offset]
+	d.offset++
+	return c
+}
+
+func (d *Decoder) ReadUint8() uint8 {
+	i := uint8(d.buffer[d.offset])
+	d.offset++
+	return i
+}
+
+func (d *Decoder) ReadUint16() uint16 {
+	i := binary.BigEndian.Uint16(d.buffer[d.offset : d.offset+2])
+	d.offset += 2
+	return i
+}
+
+func (d *Decoder) ReadUint32() uint32 {
+	i := binary.BigEndian.Uint32(d.buffer[d.offset : d.offset+4])
+	d.offset += 4
+	return i
+}
+
+func (d *Decoder) ReadUint64() uint64 {
+	i := binary.BigEndian.Uint64(d.buffer[d.offset : d.offset+8])
+	d.offset += 8
+	return i
+}
+
+func (d *Decoder) ReadUint128() Uint128 {
+	hi := binary.BigEndian.Uint64(d.buffer[d.offset : d.offset+8])
+	lo := binary.BigEndian.Uint64(d.buffer[d.offset+8 : d.offset+16])
+	d.offset += 16
+	return Uint128{
+		Hi: hi,
+		Lo: lo,
+	}
+}
+
+func (d *Decoder) Skip(n int) {
+	d.offset += n
+}
+
+func (d *Decoder) SkipAlign() {
+	d.offset += (d.baseOffset+d.offset+7)/8*8 - d.baseOffset - d.offset
+}
+
+func (d *Decoder) Read(n int) []byte {
+	data := d.buffer[d.offset : d.offset+n]
+	d.offset += n
+	return data
+}
+
+func (d *Decoder) Length() int {
+	return len(d.buffer) - d.offset
+}
+
+func (d *Decoder) Bytes() []byte {
+	return d.buffer[d.offset:]
+}
+
+func (d *Decoder) Offset() int {
+	return d.offset
+}
+
+func (d *Decoder) BaseOffset() int {
+	return d.baseOffset
+}
+
+func (d *Decoder) SliceDecoder(length, rewind int) *Decoder {
+	newDecoder := NewDecoder(d.buffer[d.offset : d.offset+length-rewind])
+	newDecoder.baseOffset = d.offset + d.baseOffset
+	d.offset += length - rewind
+	return newDecoder
+}